Home / 30,827.72-42,542.40-17,399.54

Finding the Fourth Proportional to 30,827.72, 42,542.40 and 17,399.54

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Solution

The fourth proportional to 30,827.72, 42,542.40 and 17,399.54 is: 24,011.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,827.72 : 42,542.40 = 17,399.54 : x
  2. Step 2: Convert to fraction form
    30,827.72/42,542.40 = 17,399.54/x
  3. Step 3: Cross multiply
    30,827.72x = 42,542.40 × 17,399.54
  4. Step 4: Simplify right side
    30,827.72x = 740,217,890.79
  5. Step 5: Solve for x
    x = 740,217,890.79/30,827.72
  6. Step 6: Final answer
    x = 24,011.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.